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Effects of telephone calls or postcards to trial participants following enrolment on retention in a randomised trial

SWAT: 114

Objective of this SWAT:

To evaluate the impact of courtesy introductory telephone calls to newly recruited trial participants on their response to follow-up questionnaires compared with a written card with equivalent information, or neither.


Idea/In Development


Please click the links below to access the registered protocol or SWAT download bundle which includes: 1)Host Trial Protocol SWAT appendices; 2) SWAT Intervention; 3)SWAT delivery instructions
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